Articles tagged with Forest Fires
North Americans breathed unhealthy air for nearly 106 million person-days as Ontario wildfires exposed people on both sides of the border. Canada's slow fire season intensified within weeks, with Toronto recording the poorest air quality in the world.
A study by Colorado State University and others found that fast-moving forest fires burn more area severely, leaving fewer trees to reseed the landscape. This can lead to long-term ecological change rather than recovery.
The 36th annual State of the Climate report reveals record highs in greenhouse gas concentrations, global sea level, and ocean heat content. Greenhouse gas concentrations reached a 53% increase from preindustrial levels, with fossil fuel emissions reaching a record high in 2025.
Researchers developed formulas to determine optimal subsidies for wildfire prevention efforts, finding that a certain threshold of subsidy is necessary to encourage broad participation. Early adoption by a few households can lead to widespread protection and community preparedness.
The study reveals a sharp increase in biomass losses due to climate change-related events, with Central European forests being particularly impacted. The findings raise concerns about the European Union's ability to meet its climate goals, highlighting the need for adapted forest management practices.
A new study found that prescribed burns reduced giant sequoia mortality by 77% and increased survival chances fourfold during the 2020 and 2021 Sierra Nevada wildfires. The research integrated remote sensing data to quantify pre-fire fuel structures and estimate wildfire outcomes for over 26,400 trees.
Researchers traced fire origins using network analysis of satellite observations, finding large fires often started from multiple locations. The study highlights the role of environmental conditions in determining where fires originate, which may challenge previous understanding of tropical forests' resilience.
A University at Buffalo study has identified a link between Canadian wildfire smoke and decreased bird sightings in New York State. Analyzing air quality data with birdwatching reports, researchers found that nearly half of the studied species were less likely to be observed when PM2.5 levels rose, including many migratory forest songb...
The WVU team developed an AI framework that allows satellites to not only detect wildfires but also coordinate with one another and adjust their observation schedules as fires spread. This enables firefighters to respond sooner, taking into account the rapid movement of wildfires, dense vegetation, and hills.
A new study confirms aspen trees can act as a fire barrier, with larger stands linked to lower fire severity. The research used remote-sensing data to create maps of forest stand disturbances, highlighting the importance of retaining aspen for biodiversity and fire prevention.
A new study reveals gaps in wildfire smoke education among people living with COPD. Researchers found that many individuals rely on smartphone apps and online information for air quality updates, but lack knowledge on mitigation strategies and real-time guidance from healthcare teams.
Researchers found that forest fires now burn ten times more acreage annually than in 1985, with severe fires causing widespread tree death. The study attributed the changes to an increasingly warm and arid environment, as well as high fuel density in forests.
A study found wide variation in contamination by lead and arsenic in soil and ash from California homes burned by the Eaton and Palisades wildfires. Cleanup efforts reduced concentrations of these contaminants, but the study highlights a need for technical review and more effective cleanup methods.
Scientists discovered a massive wildfire in the Rwenzori Mountains that shifted the region's ecology and altered plant life over 2,000 years ago. The study suggests that rising temperatures may be altering ecosystems once safeguarded by extreme alpine conditions.
A large-scale study found that forest fuel treatments can prevent significant wildfires by reducing fire severity and spread. Every dollar spent on prevention saves about $3.75, with treatments estimated to have prevented $2.8 billion in damages.
A study found that policies reducing deforestation in Brazil have failed to stop forest degradation, a slower and more dangerous form of destruction. Forests are becoming increasingly fragile due to fires, logging, and other human activities.
A study by University of California, Davis found that California's conifer forests have lost between 6% and 11% of their area over the past three decades due to wildfires. Reforestation efforts are not keeping pace with the losses, with only about 1% of deforested Forest Service lands being replanted between 2016 and 2023.
A new study by PSU researchers found that wildfires can intensify midwinter rain-on-snow events, leading to rapid snowmelt and increased flood risk. This threatens the region's critical seasonal water storage, refilling reservoirs and producing hydroelectric power.
Researchers found that frequent fires increased light in the forest understory and reduced fire intensity. Almost twice as many young oak trees survived and resprouted in plots with more frequent fires.
Researchers at the University of Texas at Austin developed an electronic tattoo to track moisture levels in plant leaves with greater accuracy. The technology uses graphene and can measure hydration levels directly from live leaves, providing more information on plant ecosystem health.
Researchers from Western Colorado University found that low snowpack extends fire season and increases severity of forest fires. Years with low snowpack are consistently associated with higher burn severity across watersheds studied from 1985 to 2021.
A UBC study finds invasive grasses are a sleeper threat on B.C.'s post-fire landscape, with the window to stop them narrow. The research highlights three actions to reduce risk: vehicle and boot washing stations, targeted seeding, and early herbicide treatment.
Researchers investigated the Mississippi River's hydrological trends, ocean carbon storage, and gender dynamics in flood mortality. A study found that precipitation increases, but soil moisture decreases, while high-resolution models reveal stronger Southern Ocean carbon absorption. Additionally, data showed men are overrepresented in ...
A study predicts that forest damage in Europe will more than double by 2100 due to increased wildfires, storms, and bark beetle activity. The team used AI-based simulation models to estimate the impact of global warming on forest ecosystems.
A recent study co-authored by NAU researchers found that fires in northern Canada have a net cooling effect when coupled with snowpack, but this is outweighed by the warming effects of permafrost carbon released from fires in Alaska. This highlights the need for land and fire managers to reconsider how wildland fires are managed.
A new study by Lund University reveals that large forest fire emissions occur below the ground surface, in peat and organic soils, rather than above-ground. This affects climate impact assessments, as traditional methods risk missing significant carbon releases.
Up to 30% of bird diversity hotspots in the western US face threats from high-severity wildfires, which could eliminate critical forest habitats. However, up to 58% of hotspots are predicted to experience low-severity fires, creating potential refuges for forest-dependent species.
Researchers found strongest associations on very smoky days and in areas with cleaner air overall. The study of over 8.6 million births in California suggests that intense wildfire smoke exposure may increase the likelihood of autism in children.
Fungi have evolved unique strategies to digest charcoal and other pollutants, including gene duplication and horizontal gene transfer. These discoveries could lead to new methods for cleaning up contaminated environments.
A recent study published by the Ecological Society of America highlights the impact of rainstorms on environmental DNA in streams. Researchers found that rainfall can wash away genetic material from land-based species and deposit it into nearby waterways, providing a fuller picture of who is present. In another study, scientists discov...
A new study published in Environmental Science & Technology found that exposure to wildfire smoke during the third trimester may raise the risk of autism diagnoses in children. Mothers who were exposed to more than 10 days of wildfire smoke had a 23% higher risk of their child being diagnosed with autism by age 5.
Research found that deciduous tree dominance reduces wildfire carbon losses in boreal forests, storing more carbon above ground and releasing less in deep organic soils. This shift could help slow climate warming by reducing carbon emissions per unit area burned.
Researchers analyzed the Caldor Fire's impact on the Lake Tahoe Basin and found that pre-fire treatments significantly reduced fire severity. The most effective treatment types did not include controlled fires, highlighting the importance of other methods such as thinning and sweeping up unburned fuel piles.
Researchers at Harvard John A. Paulson School of Engineering and Applied Sciences quantify the role of climate change in wildfires and air quality, finding that 60-82% of total burned area in western US forests is directly attributable to warming temperatures and drier conditions caused by climate change.
A study published in Science Advances found that unusually large particles of wildfire smoke had a significant cooling effect on the region they were observed in, increasing outgoing radiation by 30-36% compared to smaller smoke particles. This effect has not been included in current climate models.
A new computer model, GeoFlame VISION, uses AI and satellite imagery to produce a dynamic wildfire risk map for the entire US. The model shows that California's eastern, southwestern, and northwestern parts are at high risk due to Santa Ana winds.
A new study warns that climate change will dramatically increase wildfire danger globally, affecting traditionally fire-prone and previously unaffected regions. The projected fire danger in these areas could represent conditions with less than a 1% chance of occurrence during recent historical periods.
Human-driven climate change makes wildfires in parts of South America and Southern California much larger and more destructive. Climate models warn that severe heatwaves and droughts will make extreme wildfires more frequent and intense worldwide.
Researchers found a strong link between compound droughts and wildfires in California, leading to increased fine particulate matter (PM2.5) concentrations. The study shows that severe droughts can substantially raise wildfire risk, with PM2.5 levels increasing by 9.5·m³ under extreme conditions.
Researchers found two bacterial strains on grape leaves that can degrade guaiacol, a compound causing smoky taste in wines exposed to wildfire smoke. The study provides hope for developing biotechnological strategies to restore flavor in tainted wines.
Research from Colorado State University reveals how wildfire smoke combines with existing particulate pollution to create secondary, often more toxic, pollution and contribute to ozone formation. The study found that 90% of aerosol pollution over NYC is sensitive to at least one aspect of global changes, such as high temperatures.
Forestry professionals express concerns about AI's impact on land-management decisions and policy, citing 'black box' problems and data quality issues. However, they see potential for AI to support tasks like data analysis and task automation.
A new study reveals that small electric charges between particles play a crucial role in forming highly concentrated clusters in turbulent environments. This discovery has significant implications for climate research, medicine, engineering, and science, enabling better predictions and controls.
Analysis found that Indigenous Territories with high forest cover can decrease disease rates, including malaria and pneumonia. Legal protection is key to maintaining this effect.
A new nationwide database, TWIG, is helping land managers evaluate the impact of fuel treatments on wildfire risk. The open-access platform consolidates decades of data from across the US, enabling more efficient and effective strategies for applying treatments.
A new study found that proactive forest management can significantly reduce the risk of high-severity wildfires by 88% and stabilize carbon stocks. The research analyzed over 200 fuel reduction projects in California's Central Sierra and found that treated forests stored carbon more durably, even after extreme droughts.
Researchers propose using bio-oil to sequester carbon dioxide in abandoned oil wells, offering a cost-effective alternative to direct air capture. The technology involves fast pyrolysis of biomass feedstock, producing bio-oil that can be injected into empty wells.
Researchers found that wildfire chars can suppress methane production by supporting the growth of bacteria that outcompete methanogens. This natural process could have important implications for mitigating greenhouse gases and climate change.
A new study by UN University scientists finds that the global human population directly exposed to wildland wildfires increased by 40% since 2000, with 85% of those in Africa. This has led to 2,500 direct deaths and 1.5 million smoke-related deaths each year.
Research led by the University of Utah found that industrial private land has nearly one-and-a-half times higher odds of high-severity wildfire compared to publicly owned forests. Reducing tree density can mitigate megafire risk even in extreme weather conditions.
A new study suggests that exposure to wildfire-derived PM2.5 is linked to increased mortality and morbidity, with a 93% underestimation of the actual death toll. The research estimated 535 annual deaths from all causes due to short-term exposure to wildfire smoke.
Research found that high-elevation tropical forests in the Colombian Andes store significant amounts of pyrogenic carbon (PyC) due to past fires. The study analyzed soil samples from different elevations and land-use types, revealing PyC stocks nine to ten times higher in High Andean forests than in warmer regions.
The Amazon has experienced a 163% increase in degradation and a 54% decrease in deforestation between 2022 and 2024. This 'negative balance' of biome protection threatens Brazil's international climate commitments, particularly its target to reduce greenhouse gas emissions by 59-67% by 2035.
A new study from Colorado State University and Western Colorado University found that aspen forests can act as natural firebreaks, slowing fires' spread. Aspen trees with high moisture content and chemical differences reduce flammability, making them more resistant to burning.
Scientists at NSF NCAR developed a method using satellite imagery and USGS data to assess forest recovery, revealing that areas with conservation practices recover faster. The study also found that fire severity increases in unprotected areas and that evergreen forests benefit the most from protective measures.
A new online platform, SMRT-Flames, estimates the health impacts of wildfire smoke and provides fire managers with tools to assess potential smoke exposure. The app uses a Harvard-developed computer model to predict how fires would behave across regions and how smoke would pool and disperse.
A study of 100,000 water samples from 500 river basins found elevated levels of contaminants like organic carbon, phosphorus, nitrogen, and sediment persisting for years after wildfires. Water managers can use this data to inform planning strategies for increasing wildfire resilience.
Prescribed burns contribute to significant air pollution in the southeast, particularly in minority and low-income areas. Climate change may exacerbate these impacts as fewer burn days become available.
Researchers at Uppsala University predict that concurrent extreme events will become more frequent due to climate change, posing new challenges for preparedness. The study examines six types of events and finds a sharp increase in combinations of heatwaves and forest fires, as well as heatwaves and droughts, in various regions worldwide.
A PSU study found that fires can cause trees to die in subsequent years, affecting forest regeneration. The researchers mapped annual changes in live tree cover and found that older conifer trees and sensitive species were most likely to die later.